黄河宁夏灌区覆膜与土壤温湿度的响应对蓖麻生长的影响  

Effect of Caster Growth with Plastic Mulching and Soil Moisture in Ningxia Yellow River Irrigation Area

作　　者：于荣[1] 武文渊 王连双 

机构地区：[1]宁夏职业技术学院,银川750002 [2]平罗县种子管理站,宁夏平罗753400

出　　处：《中国农学通报》2009年第20期311-315,共5页Chinese Agricultural Science Bulletin

基　　金：宁夏"十五"科技攻关项目"平罗县万亩蓖麻基地建设研究与示范"

摘　　要：试验针对黄河宁夏灌区的生态气候和生产条件,对蓖麻不同播种时期、不同播种方式下蓖麻出苗期的土壤温度,以及蓖麻的生长发育情况,于田间布设小区精确试验,进行观测与研究。研究结果,地膜覆盖栽培有利于土壤保温增湿,延长了营养生长期和生殖生长期,十分有利于蓖麻增产,从而使蓖麻出苗早、生长快、开花早、结果早、果穗多,蓖麻的穗部特征、产量均优于露地栽培,且全程覆膜优于苗期覆膜优于露地栽培,同时,从不同播种期结果来看,早播比晚播增产明显,覆膜较露地栽培增产显著,平均增幅43.4%,露地栽培的以4月20日播种较为适宜,而覆膜栽培的播期以4月中旬较为适宜。The aim of this study was to investigate the effects of date of planting,differential planting methods and soil moisture on caster growth and development under climate and planting condition of Ningxia irrigation area.Some treatments were designed and tested in field condition.The conclusion was caster yield increased with using plastic mulching which kept the soil temperature and moisture,extended the vegetative growth and reproductive growth..Compared with opening field cultivation,caster with plastic mulching had better characters in earlier emergence of seedlings, faster growth, earlier flowering and spike, more ears and high yield. As far as date of planting concerned, earlier planting was better than later in yield with an average increase of 43.4 percent. The appropriate date of planting was in April 20 for open field cultivation and in mid-April for plastic mulching.

关 键 词：蓖麻 覆膜 土壤温度 土壤田间持水量 

分 类 号：S311[农业科学—作物栽培与耕作技术]